Universally-flexible brake.



,W. F. GRUPE.

UNIVERSALLY FLEXIBLE BRAKE.

APPLICATION FILED FEB. 20. I915.

1 304,869, Patented Nov. 14, 1916.

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WILLIAM F. (morn, or JERSEY CITY, new JERSEY, assrcnon; BY mnsm'aassrcnmnn'rs, T vim-o-rnonn conrm, or NEW YORK, n. Y., .e. conrona'rronOF NEW YORK.

UNIVEBSALLY-FLEXIBLE BRAKE. I

Specification of Letters Patent.

Patented Nov. 14, 1916.

Application filed'liebruary 20, 1915. Serial No. 9,611.

-ful Improvements in Universally-Flexible Brakes, describedmorepartic'ularly herein andallustrated m the accompanying draw- ,mentof, my invention; Fig. 2 is-a detail side ing's in which.-

Figure 1 1s a plan -v1ew of one embodielevation of parts of Fig. 1, asviewed in the. direction of arrow 2; and Fig. 3 is a detail plan view onthe line 33 of Fig. 2, and also showing a modification;

According to the drawings, the casing 1 of the phonograph or talkingmachine is of any construction. The turntable 2 shown mounted toward oneside of the casing 1, is driven by suitable mechanism.' (not shown). Themovable tone arm 3 carrying the sound box 4 is illustrated asoscillatably mounted toward the opposite end of the casing 1. e

The braking means comprises the follow; ing. The arm. 5, preferablycarrying a friction pad (5, is actuated by the arm 7, whereby theturntable 2 is brought to rest upon movement of the movable tone arm 3into a predetermined position, such as its non-playing position. 5 andthe arm 7 are constructed as integrally connected to each other andpreferably of resilient material. To effect the above relation of partsI have shown the projection 8 carried by the movable tone arm 3 andadapted, when the tone arm 3 is in non-playing position, to engage thehook end 9 of arm 7 and thereby move the friction pad 6 into brakingposition. The bar 5, 7, is shown carried by the stud 10 having theenlarged head 11 and stem 12 passing through the opening 13. The stud 13is flexibly positioned by means of the resilient element 14; shown as aspring washer, and held in position relatively to the top wall of thecasing 1 by means of the adplstable nut 15. Means are provided forbiasing the brake means 5, 7, in such direction that the effectivebraking end or friction pad 6 is normally held rom engagement with theturntable 2. As an illustration thereof, I have shown the spring arm 16engaging at its portion 17 againsta fixed part, such as the inner faceof a wall Preferably the arm of easing 1, and having another portion 18related to the stud 10, whereby stud 1O tends to twist in the desiredrotational d rection to hold the arm 5 out of contact with the turntable:2. For sin'ipli city of as- ,sembly and construction the portion 18proects through recesses of the washer 14 and.

through the slot 19 of the stud 10. The hook portion 9 of brake arm 7 ispreferably provided with the abutment portion 20 adapted normally toengage the fixed collar or base 21 of the tone arm 3.

In accordance with the described specific construction, the eflectivebraking end or friction pad 6 will be thrown into engagement with theturntable .2 when the movable tone arm 3 is po itioned in itsnon-playing position, to wit, by means of the projection S and hook 9. 3is moved out of its nonplaying position, the spring 16 forces theabutment portion 20 into engagement with the fixed collar 21, therebymoving the effective braking end or friction pad (3 out of contact withthe. turntable 2. liponrelease ot' the turntable from the brake. themotor mechanism is permitted to drive the turntable under the speedconditions determined by the speed regulating means.

It will be noted that my invention results in a brake which isuniversally yieldable, that is, yieldable in all directions. Suchconstruction is advantageous in reducing breakage of the'brake parts toa minimum. and is of particular value in reducingthe cost of breakageduring assembly. The construction is also of value in that the assemadjustability of the parts does not require especial skill or repeatedtrials for attain ing the desired results. I

In a similar manner, the universally yieldable features of my invention,wholly or partly, operates to brake the rotating ele ment of the devicewhen the tone arm, or other swinging member is in any predeterminedposition or positions other than the non-playing or non-operativeposition.- Such result may be attained, in a similar manner, byproviding the stud or similar pivotal supporting means of the )rakeproper, with an enlarged opening through which it passes and a resilientrighting means similar to the spring washer, for

\Vhen the movable tone arm righting the stud to its normal operatingposition, inthe event that blows, shocks or the like he encountered bythe brake proper. Other means'may be provided, similar to the spring 16for normally holding the brake proper out of braking position.

Whereas I have described my invention by reference to specific formsthereof, it will be understood thatniany modifications and changes maybe made without departing from the spirit ofmy invention. Thus'the slotin the stem 12 of stud 10 may be positherewith, a fixed base for saidrotating element andsaid swinging element, a brake controlling saidrotating element when said swinging element is in a predeterminedposition, a stud passing'through an opening in saidflfixed basesupporting said brake, the dimension vofsaid opening in a certaindifrecti'on being greater than the corresponding dimensionof saidsupporting stud, a resilient element extending from a portion of saidsupporting part to said fixed base, and a spring extending from a-.fixed point con trolling the rotational movement of said supportingpart.

2. The combination with a rotating ele- "ment, of a swinging element, afixed base for said rotating element and said swinging element, a brakecontrolling said rotatingele- 'ment when 'said swinging element is in apredetermined position, a stud passing through'an opening in said fixedbase supporting said brake, the dimension of said 0 ening in a certaindirection being greater is an the corresponding dimension of saidstud,said stud being provided with a recess, and a resilient elementextending from said fixed base through said recess.

3. The combination with a rotating element, of a swinging element, abase carrying saidIro'tating element and said swinging .element, a brakecontrolling said rotating filament, a stud carrying said brake andprovided with a recess, said base being provided with an opening throughwhich said stud extends and having a dimension greater than thecorresponding dimension of said stud, a flexible washer connecting saidstud with said base, and a flexible arm extending from said base andthrough'said recess and tending normally to move said brake in adirection away from said rotating element.

4. The combination with a rotatable table, of a swinging tone arm, abase supporting said table, a pivoted reciprocating braking membermounted on said base, resilient means having one end-in fixed relationto said base and its other end engaging said braking member to therebytend tounove said braking member in a certain direction.

to effect non-braking, a stop positioned on said 'base limiting themovement of said braking member in said certain direction, a hookcontrolling said braking member and a projection in fixed relation tosaid swinging tone arm arranged to engage said hook when said swingingtone arm is in non-playing position to thereby move said braking vmemberinto braking position.

5. The combination with a rotatable table of a swinging tone arm, a basesupporting said table, a braking member pivoted onto said base, saidbraking member having a part extending angular-1y with respect toanother part of said braking member, a fric-' tion pad carried by saidfirst named part of the braking member, resilient means having one endabutting said base and its other end engaging said braking memberthereby tending to move said braking member in a certain direction toeffect non-braking, a stop positioned on said base limiting the movementof said braking member in said certain direction, a hook carried by Saidother part of the braking member and a projection carried by saidswinging tone arm arranged to engage said book when said swinging tonearm is in non-playing position to thereby move said braking member intobraking position.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

VILLIAM F. GRUPE.-

Witnesses: HENRY J. LUCKE,

K. G. Ln Ann.

